There is a ferry near me that is not in Google Maps. How do I add it as a suggestion to Google?
I've had some success with reporting problems on Google maps, such as missing connections between roads. It may take a few weeks but there appears to be some form of human review. They keep changing things but at the time of writing, in the desktop view, there's a "send feedback" menu item. None of the options are perfect, but one is to report a missing road.